The classical trajectroy Monte Carlo method is empolyed to calculate the charge transfer cross sections and the n shell distribution of capture electron for the collision of ions with hydrogen.For the collision of partial ionized ions with hydrogen,a q-scaled cross section is obtained by introducing the reduced variables.The present results are in good agreement with experimentally measured results.

Charge transfer cross sections in C^q+ +H, N^q+ + HO ^q+ + H collisions are calculated with the CTMC method. The energy range of incident projectile is from 10keV/amu to 250keV/amu. The ions are partially stripped o rfully. Hamilton's equations of motion are given by the 12 coupled equations. Six pseudo-random parameters are required for the determination of the trajectories. A model potential between A^q+ ion and the active electron is used. The other two interactions are pure Coulombic. In our calculation, more than 2000 trajectories are required. Introducing reduced variables, σ_tr=σ_tr/q, E=E/q^1/2, a q-scaled electron capture cross section curve is obtained, all cross section data are grouped around a single curve. Numerical results are compared with other theoretical calculations. It shows that the resuts are in reasonable agreement with other Ones.

In this paper, we use classical trajectory Monte-Carlo theory to calculate the collision between fully ions and H atom. By solving the Hamiltonian equations of the system, we obtain the cross sections of charge transfer and ionization. Comparison with the ORNL recommended data shows that our results are in good agreement in the intermediate energy range. The method is correct and the results are satisfactory.

A set of practical parametes on hydrogenic ions is given for electron-impact excitation cross sections and rate coefficients with transitions nl→n'l',n1,2,...,7, n'=2, 3,..., 8. Application ranges are 3≤ Z ≤74;x≥2 for n'≤5;x≥20 for n'≥5. The errors are generally about 30%.